Planer-chuck



(ModeL) 2 Sheets-Sheet 1. J. P. WRIGHT.

PLANER GHUGK.

Patented Oct. 9, 1883.

\NVENTOR! a. P. WRIGHT;

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(ModeL) 2 Sheets-Sheet 2.

J P. WRIGHT.

PLANER CHUCK.

N0 286,362 Patented Oct. 9, 1883. Fi 4L.

WITNESSES a 4 1 a. INVENTUR: JTAPW I u. R WRIGHT,

1 BY Jfiwflww ATTYS.

N. PETERS. mum mr, Wnhinglflm D4 r.

UNITED STATES PATENT @FFICE.

Jnoon P. wnicn'r, on NEW nnvnn, ASSIGNOR TO THE DIAMOND MATCH COMPANY, or WESTVILLE, corn-concur.

PLANER- SPECIFICATION forming part of Letters Patent No. 286,362, dated October .9, 1853.

Application filed May 4, 1883. (Model) To all whom it may concern:

Be it known that I, JACOB P. \VRIGHT, of New Haven, county of New Haven, and State of Connecticut, have invented new and useful 7 Improvements in Planer-Chucks; and I do hereby declare that the following is a full and exact description of the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon. This invention relates to that class of chucks the members of which are specially adapted for use in connection with planers and other similar machines and it consists, mainly, first,

near the edge of the plate I); which holes open in the combination of the movable jaw of the I 5 chuck and a certain holding-bar and holdingbolts with a tapering locking-key; and, second, in the combination, with the movable jaw, of an auxiliary holding=b1ock of special construction, as will be fully described here- .inafter.

In the drawings, Figure 1 represents aperspective view of my improved chuck Fig. 2,

a vertical sectional view of the movable jaw,

some of the parts of the same also being shown detached; Fig. 3, a transverse sectional view of the movable jaw and the auxiliary holdingblock; Fig. 4, a plan view of the base-piece of the chuck detached 5 Fig. 5, a plan view of the movable portion B reversed; Fig. 6, a central vertical sectional View of the base-piece A and movable portion 13.

To enable others skilled in the art to make myinventiop; I will proceed to describe fully the construction of the same.

A, Figs. 1 and}, represents the base or foundation piece of the chuck, consisting of the circular plate a, having theproj ecting cars a a, with slots adapted to receive the bolts which secure the base-piece to the planer 40 table in the manner well understood.

a 6 Fig. 4, represent segmental recesses in the inner face of theplate,which are provided central circular recess, 1), adapted .to receive the central circular projectlon, a, of the base- .piece, and the holes 6' If, for receiving the wider grooves in the portion b, as shown in Figs. 2 and 6.

t represents a series of verticalholes located below into a space formedby cutting away the corners of the .plate, as shown. The purpose of this construction is to permit anything falling into the holes to be readily discharged.

b, Fig. 1, represents a block projecting from one end of the plate N, which forms the fixed jaw of the chuck, as will be hereinafter de scribed.

O 0 represent bolts, the heads of which are held in the segmental recesses c a of the basepiece A in such manner as to move freely therein within the limits of the recesses. These bolts extend through the holes I) b of the plate b, and are provided with nuts, as shown. By means of this construction the plate I) is secured to the plate a in such mannor as to be capable of making a partial rotation thereon, the engagement of the projection a with the recess b serving to guide the parts properly in their movement;

D represents themovable jaw, consisting of a block having the bearing-face d, Fig. 2, the

vertical, openingsd d, Fig. 6, for holding the. bolts, hereinafter referred to, the longitudinal slot (1?, Figs. 1 and 2, with inclined base, as shown in Fig. 6, and the overhanging portion (P, Fig. 2, as shown.

E E represent bolts, the heads of which are adapted to be held in the slots 6% of the plate, I), and the shanks of which extend up through the movable jaw, as shown.

c, Fig. 2, represents a vertical slot in the up per end of each of the bolts, and F a bar having recesses f f, which'bar is adapted to hold the upper ends of the bolts, as shown.

, 'G represents a key-bar of wedge or tapering form, which is adapted to be inserted in lower side of the holding-bar.

key-bar longitudinally in the slot in the propthe longitudinal slot of the movable jaw .be- I The auxiliary holder H is also adjusted upon tweenthe inclined base of the same and the By moving this or direction the heads of the bolts E E will be tightly drawn against the overhanging portions of the slots of the plate I), and thus be caused to lock the movable j aw to the plate I).

By means of the headed bolts E E the movable jaw, when the locking-key is withdrawn, or partially withdrawn, may be moved into any desired position relatively to the fixed jaw, and then be locked in that position, in the manner before described.

H represents an auxiliary holding-block, provided with a horizontal projection, h, having an inclined surface, and a vertical projection, h, having the adjusting-screws h h, as shown.

h Fig. 3, represents a pin projecting from the lower face of the block, one being located at each end, which pins are adapted to enter any pair of the series of holes in the plate b. I

By means of this construction the auxiliary holding-block is adapted, by means'of its adjustingscrews, to press upon the upper portion of the movable jaw and move the upper edge of the same forward slightly, to clamp more strongly the work which is being held. j

The general operation is substantially as follows: The base-piece a of the chuck is securedf' to the head or bed of the planer or other machine with which it is desired to use the same by means of bolts extending through the slots in the cars a a, in the manner well understood. The plate b, by means of the bolts 0 O and the segmental recesses a a in the basepiece, may be rotated within certain limits for the purpose of bringing the jaws of the chuck WVhen adjusted into any desired position. the parts may be rigidly secured together by screwing up the nuts 0 on The work to be held the plate I) with the movable jaw, and when the latter is locked the adjusting-screws of the former are turned to cause the upper edge of the jaw to clamp more tightly the upper edge of the work which is being held.

The movable jaw and the auxiliary holder can readily be removed from the plate b when desired.

Some of the advantages of the described construction are as follows: The construction of the parts for locking and holding-the movable jaw is quite simple, and yet the action is effective and the operation of locking can be" readily and easily performed. The auxiliary holding-block furnishes a useful adjunct f0 increasing the clamping action.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. The combinationof the movable jaw of the chuck and the holding-bar and holdingbolts, with a tapering locking-key, substantially as described, p

2. In combination with the fixed jaw b the movable jaw D, with slot (1, having the illclined base, bolts E E, holding-bar F, and tapering locking-key G, as and for the purpose described.

3. In combination with the movable jaw D, the auxiliary holding-block H, with horizontal projection h, having an inclined surface, as and for the purpose described.

4. The chuck described, having the basepiece a, with cars a a, segmental recesses 06 a and central circular projection a, the plate I), with recess I), plate 71 slots b Z), series of vertical openings b 12 and fixed jaw I), the bolts 0 O, the movable jaw D, with slot (1*,

J. P. WRIGHT.

Witnesses:

E. B. BUsH, H. A. BARNEs. 

